Improvement On Tear Resistance Of Rubber Moulded Mat By Varying Filler And Accelerator Contents

An industrial baby product, rubber moulded mat, produced in Rubber Leisure Products Sendirian Berhad has encountered with tear problem at the complicated shape of suction cups when it is manually stripped after moulding process. Its tear resistance has been improved in this work to reduce the high r...

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Main Author:	Soh, Tiak Chuan
Format:	Thesis
Language:	English English
Published:	2016
Subjects:	T Technology (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/18554/1/Improvement%20On%20Tear%20Resistance%20Of%20Rubber%20Moulded%20Mat%20By%20Varying%20Filler%20And%20Accelerator%20Contents%2024%20Pages.pdf http://eprints.utem.edu.my/id/eprint/18554/2/Improvement%20On%20Tear%20Resistance%20Of%20Rubber%20Moulded%20Mat%20By%20Varying%20Filler%20And%20Accelerator%20Contents.pdf
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institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) Soh, Tiak Chuan Improvement On Tear Resistance Of Rubber Moulded Mat By Varying Filler And Accelerator Contents
description	An industrial baby product, rubber moulded mat, produced in Rubber Leisure Products Sendirian Berhad has encountered with tear problem at the complicated shape of suction cups when it is manually stripped after moulding process. Its tear resistance has been improved in this work to reduce the high rejection and reworking rates in production by focusing on the two parameters of fillers and accelerators. The effect of fillers was focused on the content of precipitated silica and calcined clay whereas the effect of accelerators was studied by using mercaptobenzothiazole disulphide (MBTS), Zn-2-mercaptobenzo thiazole (ZMBT) and diphenyl guanidine (DPG). Phase 1 of this research involved the analyses of different ratios and combinations of fillers and accelerators. Phase 2 involved the analyses of tensile strength and tear strength of vulcanizates with 5 levels of fillers and 4 levels of accelerators by using statistical factorial design of experiment. Phase 3 focused on the test mechanism of hot-tear-strength, mass production validation and benefit-cost analysis. A scorch-safe filled masterbatch added with silane coupling agent was formulated. Multiple-stage melt mixing method can disperse effectively the fillers into the smaller aggregated structure. The combination of accelerators MBTS:DPG:ZMBT enhanced better the rubber tear resistance than the conventional MBTS:DPG system. An optimum formulation was produced with the levels of fillers:accelerators at 0.65phr:1.77phr and reduced the content of calcium carbonate from 40 phr to 20 phr which have imparted better tear resistance. The finely dispersed and uniformly distributed fillers, optimum crosslink density and predominantly polysulphidic crosslink type improved primarily the rubber tear resistance especially on hot-tear-strength. The new formulation did not deteriorate the end-use function and colour aesthetic of the finished product as well as did not increase the product manufacturing cost.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Soh, Tiak Chuan
author_facet	Soh, Tiak Chuan
author_sort	Soh, Tiak Chuan
title	Improvement On Tear Resistance Of Rubber Moulded Mat By Varying Filler And Accelerator Contents
title_short	Improvement On Tear Resistance Of Rubber Moulded Mat By Varying Filler And Accelerator Contents
title_full	Improvement On Tear Resistance Of Rubber Moulded Mat By Varying Filler And Accelerator Contents
title_fullStr	Improvement On Tear Resistance Of Rubber Moulded Mat By Varying Filler And Accelerator Contents
title_full_unstemmed	Improvement On Tear Resistance Of Rubber Moulded Mat By Varying Filler And Accelerator Contents
title_sort	improvement on tear resistance of rubber moulded mat by varying filler and accelerator contents
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Manufacturing Engineering
publishDate	2016
url	http://eprints.utem.edu.my/id/eprint/18554/1/Improvement%20On%20Tear%20Resistance%20Of%20Rubber%20Moulded%20Mat%20By%20Varying%20Filler%20And%20Accelerator%20Contents%2024%20Pages.pdf http://eprints.utem.edu.my/id/eprint/18554/2/Improvement%20On%20Tear%20Resistance%20Of%20Rubber%20Moulded%20Mat%20By%20Varying%20Filler%20And%20Accelerator%20Contents.pdf
_version_	1747833934796816384
spelling	my-utem-ep.185542021-10-08T15:17:06Z Improvement On Tear Resistance Of Rubber Moulded Mat By Varying Filler And Accelerator Contents 2016 Soh, Tiak Chuan T Technology (General) TA Engineering (General). Civil engineering (General) An industrial baby product, rubber moulded mat, produced in Rubber Leisure Products Sendirian Berhad has encountered with tear problem at the complicated shape of suction cups when it is manually stripped after moulding process. Its tear resistance has been improved in this work to reduce the high rejection and reworking rates in production by focusing on the two parameters of fillers and accelerators. The effect of fillers was focused on the content of precipitated silica and calcined clay whereas the effect of accelerators was studied by using mercaptobenzothiazole disulphide (MBTS), Zn-2-mercaptobenzo thiazole (ZMBT) and diphenyl guanidine (DPG). Phase 1 of this research involved the analyses of different ratios and combinations of fillers and accelerators. Phase 2 involved the analyses of tensile strength and tear strength of vulcanizates with 5 levels of fillers and 4 levels of accelerators by using statistical factorial design of experiment. Phase 3 focused on the test mechanism of hot-tear-strength, mass production validation and benefit-cost analysis. A scorch-safe filled masterbatch added with silane coupling agent was formulated. Multiple-stage melt mixing method can disperse effectively the fillers into the smaller aggregated structure. The combination of accelerators MBTS:DPG:ZMBT enhanced better the rubber tear resistance than the conventional MBTS:DPG system. An optimum formulation was produced with the levels of fillers:accelerators at 0.65phr:1.77phr and reduced the content of calcium carbonate from 40 phr to 20 phr which have imparted better tear resistance. The finely dispersed and uniformly distributed fillers, optimum crosslink density and predominantly polysulphidic crosslink type improved primarily the rubber tear resistance especially on hot-tear-strength. The new formulation did not deteriorate the end-use function and colour aesthetic of the finished product as well as did not increase the product manufacturing cost. UTeM 2016 Thesis http://eprints.utem.edu.my/id/eprint/18554/ http://eprints.utem.edu.my/id/eprint/18554/1/Improvement%20On%20Tear%20Resistance%20Of%20Rubber%20Moulded%20Mat%20By%20Varying%20Filler%20And%20Accelerator%20Contents%2024%20Pages.pdf text en public http://eprints.utem.edu.my/id/eprint/18554/2/Improvement%20On%20Tear%20Resistance%20Of%20Rubber%20Moulded%20Mat%20By%20Varying%20Filler%20And%20Accelerator%20Contents.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=100386 phd doctoral Universiti Teknikal Malaysia Melaka Faculty of Manufacturing Engineering 1. 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